<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div>
    <input type="button" value="我是按钮">
    <button type="reset">我是button</button>
    <input type="color" name="na" id="">
  </div>
  <div>
    <label for="username">
      用户名：
      <input id="username" type="text">
    </label>
  </div>
</body>
</html>